Australian airline Qantas’ Airbus A380 fleet has reached a total of five aircraft.

The global carrier had slowly returned three of its Airbus A380 superjets to service following the November incident in which an engine explosion forced one of the aircraft to return to Singapore’s Changi airport shortly after takeoff. Now, Airbus has delivered two new A380 models to Qantas, upping the currently operating fleet to five jets. The plane involved in the Singapore incident remains out of service.

Last month’s incident had forced A380s worldwide into inspection procedures under orders from the European Aviation Safety Agency. Qantas has attributed the problem to a design issue on the A380′s Rolls Royce Trent 900 engines, which has since resulted in legal action between Australia’s largest carrier and the engine maker.

Other carriers that had grounded A380s and have since returned them to normal operations include Singapore Airlines, Air-France KLM and Germany’s Lufthansa.

Qantas will in the coming months make further additions to its A380 fleet as Airbus is on schedule to deliver two new aircraft in the early part of 2011. The European Aviation Safety Agency has also recently eased inspections on the aircraft in the wake of last month’s incident.

Despite recent turmoil, Qantas’ total passenger figures were up 7.7 in November, However the figures didn’t line up with a 4.9 rise in capacity that also came last month.